Fix a bunch of IWYU violators that don't include scoped_ptr.h

extensions/browser/api/declarative/deduping_factory_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/api/declarative/deduping_factory.h"
 
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 const char kTypeName[] = "Foo";
 const char kTypeName2[] = "Foo2";
 
 // This serves as an example how to use the DedupingFactory.
 class BaseClass : public base::RefCounted<BaseClass> {
@@ skipping 173 matching lines @@
 
   scoped_refptr<const BaseClass> c1_b(
       factory.Instantiate(kTypeName, d1.get(), &error, &bad_message));
 
   ASSERT_TRUE(c1_a.get());
   ASSERT_TRUE(c1_b.get());
   EXPECT_NE(c1_a, c1_b);
 }
 
 }  // namespace extensions